Fuel storage tank



May 2l, 1935. H. c. LEMKE FUEL sToRAG-E TANK Filed Dec. 6, 1955 Patented May 21, 1935 UNITED simTl.s

2,002,407 FUESTRAGETAK v Hugo C; Lemke, Reedsville,"Wis.r Application December s, 1,933, serial No. 701,1931

8 Claims.v

- `This invention relates Vto a fuel storage tank,

and has for its object `to provide, a tank of the class referred to,` so formed as to cause the trap.- 4 ping .or collecting below the bottom of a body of 5 fuel within the tank the foreign substances which are precipitated from the fuel whereby' when the latter is withdrawn. from the tank for consumption it will be clean. -V Y A further object of the invention is to provide, in` a manner as hereinafter set forth, a tank lof the class referred to so formed as -to `collect the sediment and water which precipitates `from -a body of fuel and further permitting for the ready removal of such precipitates when desired thereby resulting in the fuel being clean of sediment and water when withdravvnfrom` thetank for consumption. i

A further object ofthe invention is to provide, in a manner as hereinafter setV forth, a tank for thepurpose referredto having a trap or bowl V-for collecting ,theepr'ecipitates from the fuel `within the tank, and with the tank constructed invaimanneri to enable -for` removablyf extending` therein a lift pump and a sectionilinathe former for Aremoving the trapped precipitates 'without .the removal of any A"appreciable quant-ityof -the 'fuel andthe latter for delivering the fuel for consumption.`

Further objects ofthe invention areto provide, inlamanner as hereinafter set'forthfatank-for the purpose referred-*td which is simple in its constructionY and arrangement, strong, durable, compact,fthoroughlyleicient in itsl use, and comparatively f inexpensive to manufacture.

V,Figure'- 1 is a side elevation,rf broken away, and partlyin longitudinal section, of the tank.A

Figure 2is a transverse sectional View o f a modified form of tank at a point centrally of vthe filter pipe.

Figure 3 is a 'transverse sectional view of the form of tank shown in Figure `2 at a point ce'ntrallyV of thefopening for `the passagefof the fluid section line;` i

`Referring to each of the figures of the drawing, the tank generally indicated at fl includes a horig zontally disposed lannularbody `2 'of the desired diameter and length; The body Zf-is provided'at each end with a closure head. 'The heads are designated'3, Il,` are Aof flikef diameter and imthreads of :the llatter form a continuation of the threads on the-wall of opening 5,. Thejbody in its top and in close proximityftowheadIi-is provided with an opening `'l and an -upstandingfiin- 'teriorly `threaded upstanding collar '8; The fwall of `opening'l is threaded@ The threads of col-lar 18 fonn a continuation'of the threads vofthe `Wall of ,opening 1. V

The bottom IE! of the bodypzincludes aglengtli wise extending portion Il inclining ,downwardly l0 throughout from itsjouter to its innerwend .and has its outer `end merge finto `the bottom Vof head 4. The inner end ofi'portion` ll is positioned between itheptransverse median of bodyg and `the -head The bottom lli also includes;a.depending l-I hollow portion l2 disposed transversely with trespect to body 2.; The po1tionl2 isof flared'cone tourin rtransverse cross section; `and. :in slengthwisejcross section andzhas abottom I3 of segmen- .talncross section. Y-Theouter lengthwise pant 4 20 of portioml 2 is,` of greater height ,than the inner `lengthwisepart ;I5 of said portion 1|;2. The upper end-I6 of ipart al! .isof convexcurvature,` directed "toward and mergespdirectly -into the bottom .of

head 3.-V 'I'hefupperiendllofpart ;I5is;of convex 25 curvature, directed *inwardlyandn `merges y'dlectly :intoithe inner `end 'of fthe portion IIL The .iside :parts 1:9; 20 of vportion l2 i merge intothe sides-.of zbody12 and are disposed at opposite outward inclinationsV to provideifor-the lengthwise `flare '30 .of portion-l2 being greater than itsytransverse flare,4 l Y c k i The portion I2 provides a sediment and water trap or bowl and is located -intalignment withthe `opening-5. Theportion Il constitutesra runway functioning for the vheavy precipitates from 'the Abodyof fuel 2l to travel byqgravity with the-trap orlbowl. Y

' With reference to Figure f1 when the body 2 iis :used above `the ground; a removable threadedzplug `4 0 y22 Yisl employed for .extension :intozcollari 'to close opening and aremovable threaded plug :22' employed forextension into collar 8 tocloseopem ingfi. The opening 5 is employedy for twopuri- Aposes when :the ,plug 22 isremoved; one `for ithe A5 .entranceof a feed line or pipe, not shown; to ll f the tankwith fuel; and theother for the entrance 4of a lift pump,- `as shown ein dotted Vlines and designated 5y `t'o extend intothextrap near to the bot- :tomvof ythe latterV for .-the purposes of removing 50 theftr'apped precipitates. The opening n1, `when .p1ug=22 iszremoved is-ffor theientranceof azsuc- '-tionhline; `as' shown fin dotted Vlines Ianddesig- "nated'V-to deliver .ordispensewthe fue1 fromv the .tank. Y Y I Y Vses With reference to Figures 2 and 3, the tank is equipped in a manner to allow it to function for the purpose referred to when positioned below the ground level to comply with the requirements of certain municipalities, and in this connection there is secured to the threads of the wall of opening 5 and the threads of collar 6 a vertically disposed fllter pipe 23 of a length to extend above the level of the ground 23 and normally closed at its upper end by ar hinged cap 24. When the cap is thrown open, the tank may be filled with fuel if it be necessary. Now when it is desired to clean the tank, pipe 23 is opened at its top and a lift pump 25 extended through pipe 23 into tank l to a point in close proximity to the bottom of the trap for the purposes of removing the trapped precipitates. The opening 5,L when the form of tank shown in Figures 2 and 3 is employed, is not closed by plug 22, but has passed therethrough a suction line 25 which enters into the tank. The line 25 `extends from: a point in proximity to the bottom' of the tanknand up through the ground '23' to above the levelof the latter for the purpose of jdelivering or dispensing the fuel from the tank.

y TheY hereinbefore described construction of v"tank provides for the collecting of foreign bodies A'fromthe fuel and will permit of the removal of such bodies before the fuel of the tank is dissaidbody and the other head'of the pair, the v*remaining portion of said bottom being in the for-m of a trap disposed transversely with respect to said body, arranged in alignment with one of said openings, dependingrrespectively from the inner end of said inclined portion and part of the `lower portion of each side of said body, said trap .having a'portion extending inwardly from and depending with respect to the bottom of said other head, said trap being of flared contour both in transverse and lengthwise cross section `thereof and having its sides, ends and bottom permanently closed.

42. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing .the ends of said body, the top of said body being lformed with a pair of spaced openings, the bottom of said body being formed with a portion dis- .posed lengthwise thereof inclining downwardly throughout from its outer to its inner end, the

`outer. end of said portion merging intothe botf tom of one of said heads and the inner end of said portion being disposedbetween the transverse median of said body and the other head of the pair, the remaining portion of said bottom being 5in the form of a trap disposed transversely with respect to said body, arranged in alignment with one of said openings, depending respectively from -the inner end of said inclined portion and the bottom of said other head, said trap being of flared contour both in transverse and lengthwise "cross, section thereof,.and said trap including lengthwise inner and outer parts and a pair of .side parts, said inner and outer parts having. their upper ends directed upon oppositely extending convex curves merging respectively into the inner end of said inclined portion and the bottom of the said other head, the said outer part of the trap being inset inwardly with respect to said other head.

3. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing the ends of said body, the top of said body being formed with a pair of spaced openings, the bottom of said body being formed with a portion disposed lengthwise thereof inclining downwardly throughout from its outer to its inner end, the outer end of said portion merging into the bottom of one of said heads and the inner end of said inclined portion being disposed between the transverseV median of said body and the other head of the pair, the remaining portion of said bottom being in the form of a trap disposed transversely with respect to said body, arranged in alignment with one of said openings, depending respectively from the inner end of said kinclined portion and the bottom of said other head, said trap being of flared contour both in transverse and lengthwise cross section thereof, and

said trap including lengthwise inner and outer parts and a pair of side parts, said inner and outer parts having their upper ends directed upon oppositely extending convex curves merging respectively into the inner end of said inclined portion and the bottom of the inner face of the said other head, saidtrap having 'its outer lengthwise part of greater height than its inner lengthwise part and inset rearwardly with respect to said other head. Y

Ll. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing the ends of said body, the top of said body being formed with a pair of spaced openings, each arranged in close proximity to one of said heads, the bottom of said body being formed with a portion disposed lengthwise thereof inclining downwardly throughout from its outer to its inner end, the outer end of said portion merging into the bottom of one of said heads and the inner end of said inclined lportion being disposed between the transverse median of said body and the other head of the pair, the remaining portion of said bottom being in the form of a trap disposed transversely with respect to said body, arranged in alignment with one of said openings, depending respectively from the inner end of said inclined portion and the bottom of said other head, said trap being of iiared contour both in transverse and lengthwise cross section thereof, and said trap including lengthwise inner and outer parts and a pair of side parts, said inner and outer parts having their upper ends directed upon oppositely extending convex curves merging respectively into the inner end of said inclined portion and the bottom of the inner face of the said other head, said trap having its outer lengthwise part of greater height than its inner lengthwise part and its lengthwise flare greater than its transverse flare, and said trap being inset inwardly with respect to the bottom of said head.

5. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing the ends of said body, said body being formed at its top with a pair of spaced openings, the bottom of said body formed with a lengthwise disposed portion extending at a downward inclination from one of said heads to a point inwardly of and in spaced relation to the other of said heads, the remaining portion of said bottom being formed of series of imperforate parts depending from said portion, the other of said heads and the sides of said body anda horizontally disposed imperforate part integral with the lower ends of the said other parts, the said several parts coacting to provide a transversely disposed open top uninterrupted trap arranged inwardly of the said other head and aligning with one of said openings.

6. In a fuel storage tank, a horizontally disposed annular body, a pair of heads forclosing the ends of said body, said body being formed at its top with a pair of spaced openings, the bottom of said body formed with a lengthwise disposed portion extending at a downward inclination from one of said heads to a point inwardly of and in spaced relation to the other of said heads, the remaining portion of said bottom being formed of series of imperforate parts depending from said portion, the other of said heads and the sides of said body and a horizontally disposed imperforate part integral with the lower ends of the said other parts, the said several parts coacting to provide a transversely disposed open top uninterrupted trap arranged inwardly of the said other head and aligning with one of said openings, and said heads being of like diameter.

7. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing the ends of said body, said body being formed at its top with a pair of spaced openings, the bottom of said body formed with a lengthwise disposed portion extending at a downward inclination from one of said heads to a point inwardly of and in spaced relation to the other of said heads, the remaining portion of said bottom being formed of series of imperforate parts depending from said portion, the other of said heads and the sides of said body and a horizontally disposed imperforate part integral with the lower ends ofthe said other parts, the said several parts coacting to provide a transversely disposed open top uninterrupted trap arranged inwardly of the said other head and aligning with one of said openings, and said headsbeing imperforate and like diameter.

8. In a fuel storage tank, a horizontally disposed annular body, a pair of heads for closing the ends of said body, said body being formed at its top vwith a pair of spaced openings, the vbottom of said body formed with a lengthwise disposed portion extending at a downward inclination from one of said heads to a point inwardly of and in spaced relation to the other of said heads,lthe remaining portion of said bottom being formed of series of imperforate parts depending from-said portion, the other of said heads and the sides of said body and a horizontally disposed imperforate part integral with the lower ends of the said other parts, the said several parts coacting to provide a transversely disposed open top uninterrupted trap arranged inwardly of the said other head and aligning with one of said openings, an upstanding tubular member secured to the wall of that opening which aligns with the trap and provided at its upper end with a closure therefor, and said heads being of like diameter and imperforate.

HUGO C. LEMKE. 

